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(11)

EP 3 676 646 A1

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(43) Date of publication: 08.07.2020 Bulletin 2020/28 (21) Application number: 18851696.7 (22) Date of filing: 30.08.2018

(51) International Patent Classification (IPC):  G02B 6/293(2006.01) H01P 1/205(2006.01) H01P 7/06(2006.01) H03H 9/24(2006.01) H01P 1/213(2006.01) (86) International application number: PCT/US2018/048954 (87) International publication number: WO 2019/046645 (07.03.2019 Gazette 2019/10)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 30.08.2017 US 201762552356 P 20.09.2017 US 201762561123 P (71) Applicant: The Regents of the University of California Oakland, CA 94607-5200 (US)	(72) Inventors: YAO, Baicheng Los Angeles, CA 90095 (US) HUANG, Shu-Wei Los Angeles, CA 90095 (US) WONG, Chee Wei Los Angeles, CA 90095 (US) VINOD, Abhinav Kumar Los Angeles, CA 90095 (US) (74) Representative: Patentanwaltskanzlei Matschnig & Forsthuber OG  Biberstraße 22 Postfach 36 1010 Wien 1010 Wien (AT)